8/22/2011 - A F-16 Fighting Falcon fires an air-to-air missile during a weapons system evaluation program mission at Hill Air Force Base, Utah. The WSEP missions of Combat Hammer and Combat Archer are part of an annual month-long event held at the base by the 53rd Weapons Evaluation Group. The group is responsible for air-to-ground and air-to-air weapons evaluation. (Courtesy photo)

8/22/2011 - An F-16 Fighting Falcon from Shaw Air Force Base, S.C., fuels up during a Combat Hammer mission at Hill Air Force Base, Utah. The Combat Hammer missions are part of an annual month-long weapons system evaluation program held at the base by the 53rd Weapons Evaluation Group. The group is responsible for air-to-ground and air-to-air weapons evaluation. (Courtesy photo)

8/22/2011 - An F-16 Fighting Falcon from the 457th Fighter Squadron, releases a guided bomb unit-12 during a Combat Hammer mission at Hill Air Force Base, Utah. The Combat Hammer missions are part of an annual month-long weapons system evaluation program held at the base by the 53rd Weapons Evaluation Group. The group is responsible for air-to-ground and air-to-air weapons evaluation. (Courtesy photo)